The 13th annual Lewiston GardenFest presented by Lewiston Garden Club will be held from 10 a.m. to 5 p.m. Saturday and Sunday, June 16 and 17 along Center Street in Lewiston. Here are a dozen things you can do at the event: 1. Browse the nearly 80 vendors. Get ideas and merchandise to beautify your own outdoor space from the vendors lining Center Street. They offer flowers, plants, handcrafted art, garden décor and more. 2. Stroll some of Lewiston’s best private gardens. Throughout the…